Adult heart beat. Normal pulse rates at rest, in beats per minute BPM: Figures are generally considered averages, and depend greatly on individual physiology and fitness. These disorders can include: After the age of 10 years, the heart rate of a person should be between 60 and beats per minute while they are resting. Related Posts: Cold-weather exercise Working out? AliveCor makes a ECG case for your smart phone that will record, diasnosis, store and send if needed to a cardiologist. Multiply this number by four to calculate your beats per minute. The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide. A very slow heart rate bradycardia may be associated with heart block.